Robin Holt wrote:
>
> wait_task_zombie() is taking many seconds to get through the list.
> For the case of a modprobe, stop_machine creates one thread per cpu
> (remember big number). All are parented to init and their exit will
> cause wait_task_zombie to scan multiple times most of the way through
> this very long list looking for threads which need to be reaped.
Could you try this patch
http://marc.info/?l=linux-kernel&m=117337194209912
?
It can't solve the whole problem, but at least an exiting kernel thread
won't kick init.
Oleg.
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